Eliot Spitzer, a lawyer and politician, served as New York's Attorney General from 1999 to 2006, earning the moniker "Sheriff of Wall Street" for his vigorous crackdown on corporate misconduct. His efforts primarily targeted the financial sector, where he investigated and exposed fraudulent practices that had misled investors and enriched investment banks. Spitzer's investigations, notably against Merrill Lynch and Salomon Smith Barney, brought to light conflicts of interest where analysts would publicly recommend stocks as "strong buys" while privately deeming them worthless, often to secure lucrative investment banking business from those companies.

One of Spitzer's most prominent cases involved Merrill Lynch, where internal emails revealed analysts privately disparaging stocks they publicly endorsed. For instance, analyst Henry Blodget rated a stock a "P-O-S" internally while publicly touting it. These practices were driven by the significant investment banking fees, sometimes reaching $100 million a year, that firms earned from companies whose stocks they promoted. Spitzer argued that millions of Americans lost substantial funds due to these deceptive practices, with analysts knowingly providing inaccurate advice.

Spitzer's investigations also uncovered practices at Salomon Smith Barney, including star telecom analyst Jack Grubman, whose $20 million annual compensation was tied to investment banking revenue rather than stock pick quality. This led to instances where CEOs of companies like WorldCom received preferential allocations of hot IPOs, yielding millions in profits, in exchange for their companies' investment banking business. Spitzer pursued civil complaints rather than criminal charges, aiming to reform the system and restore integrity rather than drive firms out of business, resulting in significant fines and new regulations, including a $1.4 billion settlement from ten major investment firms.

Despite making enemies on Wall Street who viewed him as an opportunist, Spitzer's actions were credited with bringing critical issues to the political agenda and forcing reforms that federal bodies like the SEC had failed to address. The SEC, for example, had not brought a single case involving stock analysts or IPO allocations in the decade prior to Spitzer's intervention. His work compelled Merrill Lynch to settle for $100 million and separate research from investment banking, and he sought to recover $1.5 billion from executives who profited from what he termed "ill-gotten gains" through IPO allocations. Ultimately, Spitzer's efforts were widely seen as a necessary push for accountability and transparency in the financial industry.